public class Phone {
	String brand;
	int price;
	// ....
	Battery b1;// 电池

	public void show() {
		System.out.println("这个手机是" + brand + "的");
		System.out.println("价格是" + price + "元");
		System.out.println("电池的牌子是" + b1.brand + ",容量" + b1.volume + "毫安");
	}
}
